The adult client receives dexamethasone for chronic lymphocytic leukemia. It is most important for the nurse to report which finding to the health care provider?

1. PT of 12 seconds & Hgb of 15 g/dL.
2. BUN of 18 mg/dL & creatinine of 1 mg/dL.
3. Serum K of 3.4 mEg/L & serum Ca of 7.8 mg/dL.
4. AST of 18 U/L & ALT of 12 U/L.